Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7931120 | Exhaust device and vehicle with exhaust device An exhaust device for a vehicle, such as a scooter type motorcycle, comprises an exhaust pipe and a muffler. A first end portion of the exhaust pipe is connectable to an engine of the vehicle. The muffler includes an outer wall defining an internal space of the muff... | 04/26/2011 |
| 7905321 | Inserts for engine exhaust systems The insert for an engine exhaust system has at least one conical section of flexible mesh or rovings of metallic or other high temperature resistant fiber or tape. Each section includes a rigid anchor or attachment ring having an outer diameter closely conforming to... | 03/15/2011 |
| 7631726 | Silencer for air induction system and high flow articulated coupling An air induction silencer assembly includes an acoustic interference member disposed within a conduit. The acoustic interference member is tuned to acoustically cancel a selected noise energy frequency. An acoustic absorbing member is also disposed within the condui... | 12/15/2009 |
| 7438157 | Muffler for an exhaust gas system A muffler for an exhaust gas system of an internal-combustion engine has an exhaust gas inlet and a first flow pipe arranged inside the muffler and completely penetrating the muffler. A shut-off device is arranged in the first flow pipe, for the shutting-off and ope... | 10/21/2008 |
| 7407036 | Muffler for compact combustion engines To provide a muffler for a compact combustion engine, which is simple in structure and effective to sufficiently reduce the temperature of exhaust gases while avoiding contact with an external air, an exhaust guide passage 7 for communicating the exhaust gase... | 08/05/2008 |
| 7407037 | Exhaust silencer for internal combustion engine A high-performance exhaust silencer in which a shell wall includes a shell outer plate, a shell inner plate, and a damping material to be inserted therebetween. A space between the shell outer plate and shell inner plate of the exhaust silencer is narrowed and the s... | 08/05/2008 |
| 7380638 | Exhaust noise control for motorcycles A noise control apparatus for a motorcycle exhaust system. The apparatus includes at least one exhaust pipe assembly having a direct pass-through mode and an indirect mode wherein exhaust gases are optionally directed through noise attenuating means. The apparatus i... | 06/03/2008 |
| 7350349 | Method and device of a particle filter for an exhaust system, silencer including such a device, and a combustion engine driven vehicle Method and device for a particle filter for an exhaust system for a combustion engine, wherein the filter is regenerated by spontaneous combustion of particles accumulated in the filter. Exhaust gases from the combustion engine are led, during operation, past the fi... | 04/01/2008 |
| 7341173 | Exhaust gas diffuser and filter system for a pneumatic nail gun The exhaust gas diffuser and filter system for a pneumatic nail gun provides for the diffusion and filtering of exhaust gas, which is typically pressurized air, generated by the pneumatic nail gun during usage thereof. The system includes a diffuser plate adapted fo... | 03/11/2008 |
| 7325474 | Silencer The present invention relates to a silencer easily cleanable inside. This silencer comprises a casing cylinder and a segment member housed in the casing cylinder to constitute a sound reducing means. The silencer further comprises a segment member fastening means fo... | 02/05/2008 |
| 7293629 | Exhaust apparatus for small-sized engine An exhaust apparatus has an exhaust pipe that receives exhaust gas from an engine and a muffler attached to the exhaust pipe. The muffler has an exhaust portion that discharges exhaust gas received by the exhaust pipe. A tubular member is attached to the exhaust por... | 11/13/2007 |
| 7281606 | Exhaust sound and emission control systems The exhaust sound and emission control systems comprise a series of embodiments of devices for reducing sound and noxious emissions from an automotive exhaust. The system may have an exhaust resonator having one or more catalytic converter elements in combination th... | 10/16/2007 |
| 7263826 | Muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe A muffler device with catalysts for improving purifying exhaust gas of nitrogen oxides within a motorcycle exhaust pipe comprises a muffler divided into three chambers, a first chamber, a second chamber, and a third chamber; a front exhaust pipe; a front reduction c... | 09/04/2007 |
| 7228935 | Attachment pin for an exhaust-gas muffler The invention relates to an attachment pin (1) for fixing an exhaust-gas muffler (2) in an apparatus part (4) of a portable handheld work apparatus (5) driven by an internal combustion engine. The exhaust-gas muffler (2) includes e... | 06/12/2007 |
| 7216739 | Muffler for pneumatic hand tool A pneumatic tool (610) and a muffler assembly (600) therefor, for quieting the operation of the pneumatic tool, are disclosed. In one embodiment, the muffler assembly (600) is slidably disposed within the exhaust passage (616) and include... | 05/15/2007 |
| 7191849 | Pneumatic tool A pneumatic tool includes a shell with a chamber defined therein, a first passage communicated with the chamber and a second passage communicated with the chamber. A rotor is installed in the chamber for rotation when driven by pressurized air flowing into the chamb... | 03/20/2007 |
| 7185678 | Orifice plate diffuser A noise reducing device for a pressurized fluid stream, i.e., a gas, includes a housing. An inlet end and an outlet end of the housing each have at least one orifice for passing a fluid therethrough. The inlet end orifice includes an inlet face and an outlet face an... | 03/06/2007 |
| 7156202 | Method and apparatus for venting exhaust gas from an engine A muffler for coupling to an exhaust port of an internal combustion engine. The muffler includes a housing having an exhaust inlet configured to receive exhaust gas from the engine, at least one internal expansion chamber and an outlet opening. The muffler further i... | 01/02/2007 |
| 7100737 | Muffler for noise reduction A muffler assembly, comprising an outer muffler assembly comprising a plurality of fiberglass discs and a plurality of reactive plates, and an inner muffler assembly comprising a plurality of fiberglass discs and a plurality of reactive plates the inner muffler asse... | 09/05/2006 |
| 7062908 | Construction for exhaust emission control An object of the present invention is to provide a construction for exhaust emission control, which can prevent thermal deterioration in a catalyst and can heat exhaust gas to a catalyst activation temperature. In the present invention, an electrically heated cataly... | 06/20/2006 |
| 7011179 | Auxiliary heater arrangement with a muffler An arrangement having an auxiliary heater, a catalytic converter (12) for catalytic post-combustion of exhaust gas from the heater, a muffler (14) for damping of the noise caused by the exhaust gas, and an exhaust line for removing exhaust gas from the... | 03/14/2006 |
| 6991043 | Pneumatic tool A pneumatic tool includes a shell with a chamber defined therein, a first passage communicated with the chamber and a second passage communicated with the chamber. A rotor is installed in the chamber for rotation when driven by pressurized air flowing into the chamb... | 01/31/2006 |
| 6978605 | Exhaust emission control system for engine In an exhaust emission control system for an engine, comprising an exhaust emission control catalyst disposed in an exhaust muffler whose inside is divided into a plurality of chambers, at least a portion of the inside of the exhaust muffler is divided into a first ... | 12/27/2005 |
| 6935460 | Noise muffler for oxygen concentrator A noise muffler for the exhaust of waste gases from apparatus such as an oxygen concentrator, including a muffler core with an inlet to receive the waste gases and a plurality of bores in the core first to direct the waste gases through a filter material and a cap e... | 08/30/2005 |
| 6932188 | Silencer for vacuum cleaner A silencer for a vacuum cleaner is provided and includes at least one hermetic expansion chamber mounted in an exhaust channel of the vacuum cleaner and allowing an exhaust airflow from the vacuum cleaner to pass through. The expansion chamber at its two sides has a... | 08/23/2005 |
| 6918526 | Muffler for staple guns A muffler is received in a passage of an end member connected to a handle of the staple gun and a fitting extends from the end member so as to be connected to a hose. The muffler includes a tubular body and a plurality of plates extend from an end of the tubular bod... | 07/19/2005 |
| 6915877 | Muffler device A muffler device, in one preferred embodiment, having four barriers therein. Each barrier functions to form an within which the exhaust stream can be partitioned and redirected. Eventually, the exhaust streams are once again recombined and expelled from the muffler.... | 07/12/2005 |
| 6913112 | Noise attenuation assembly The present invention provides a noise attenuation assembly having at least one noise prevention pad disposed within an annular gap formed between a gas passage tube and an overlap tube. The noise prevention pad prevents the two tubes from coming in contact during t... | 07/05/2005 |
| 6902030 | Sound muffling apparatus for air operated equipment A muffler for equipment powered by compressed air, the muffler comprising a flexible muffler body formed from a sufficiently resilient material to resiliently deform under the influence of an exhaust air stream from an air motor, the body having an inlet and an outl... | 06/07/2005 |
| 6892854 | Muffler with catalytic converter arrangement; and method An apparatus for modifying an exhaust stream of a diesel engine is provided. The apparatus includes a muffler arrangement having an exhaust inlet and an exhaust outlet in construct and arrange for sound attenuation therein. The apparatus also includes a catalytic co... | 05/17/2005 |
| 6837336 | Apparatus for treating a gas stream The invention provides apparatus for treating a gas stream, notably a silencer assembly for use to treat the exhaust gasses from an internal combustion engine, which apparatus comprises a plurality of compartments within which one or more treatments are to be perfor... | 01/04/2005 |
| 6837335 | Replaceable catalyst for exhaust system A new and improved exhaust system as described herein, wherein the catalytic cartridge is selectively replaceable. The catalytic cartridge, which contains the catalyst, is located within the baffle tube. The baffle tube is easily inserted and removed from the housin... | 01/04/2005 |
| 6739426 | Low-noise pressure reduction system Disclosed is a diffuser apparatus for facilitating a reduction in fluid pressure and suppression of noise. The apparatus comprises a tubular inner sleeve, a tubular muffler and a tubular outer sleeve. The inner sleeve defines a fluid flow axis and has a plurality of... | 05/25/2004 |
| 6668971 | Pneumatic hand tool exhaust muffler having inner and outer tubes A muffler is provided for use in a pneumatic hand tool having a handle with an exhaust passage. The muffler includes an inner tube, an outer tube, an upper plate, and an end cap. The inner tube is located within the outer tube, with one or more openings b... | 12/30/2003 |
| 6622818 | Sound attenuating device An improved sound attenuating device for use in a gas transportation duct, said device comprising a core of acoustically absorptive material substantially enclosed within an impervious film to prevent direct contact between the acoustically absorptive mat... | 09/23/2003 |
| 6622482 | Combined catalytic muffler A catalytic muffler has at least one reactor bed, each bed having an array of discreet adjacent flow zones. The flow zones are interconnected by a series of passages for unidirection flow of a gaseous fluid sequentially through each adjacent zone in turn ... | 09/23/2003 |
| 6604604 | Catalytic muffler and method A catalytic muffler includes a housing having an inlet, an outlet, and a plurality of catalyst coated serially stacked perforated cups through which exhaust flows and is acoustically attenuated and catalyzed.... | 08/12/2003 |
| 6588203 | Exhaust device of internal combustion engine An engine including a silencer in the exhaust passage thereof, wherein an exhaust gas flow passage pipe is arranged in the silencer body and a particulate filter is arranged inside the exhaust gas flow passage pipe. A first exhaust gas inflow-outflow open... | 07/08/2003 |
| 6520287 | Methods and systems for low temperature cleaning of diesel exhaust and other incomplete combustion products of carbon-containing fuels Systems and apparatus for degrading and cleaning combustion products of carbon-containing fuels such as fossil fuels. The systems and apparatus utilize catalytically reactive particles that are at least partially suspended by moving gases within a reactio... | 02/18/2003 |
| 6467570 | Spark arrester with spark filter An exhaust processor includes a housing formed to include an interior region and a partition or first spark arrester that partitions the interior region into chambers and includes a wool filter formed to include an opening. The wool filter is positioned t... | 10/22/2002 |
